NASA's Vehicle System Test Bed (VSTB) Rover
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ Oct. 13, 2009
This photograph shows the Vehicle System Test Bed (VSTB) rover, a nearly identical copy to the Curiosity rover on Mars. The VSTB is used for Earth based testing. This is a close-up of its mast. Photo by Dan Goods and David Delgado.